Operational since 1969, Red Robin Gourmet Burgers Inc. has been a fast-food restaurant specializing in gourmet burgers. Located in Tulsa, Okla., it operates more than 450 restaurants across the United States and Canada. The restaurant offers a menu, including a variety of items, such as signature chicken sandwiches as well as salads, entrees and signature bottomless beverages. In addition, the eatery also serves turkey burgers, fish sandwiches, Gardenburger as well as vegan Boca Burgers, to name a few.